[astro-ph.EP] Collisions between planetary bodies are essential to the assembly of rocky planets like the Earth, but they are extremely difficult to observe. We therefore rely on indirect signatures of […]
dust
Posted inMars
MEDaL-1 Mars Lander Science Definition Team
[ESA] Join the Science Definition Team (SDT) to help define the Exploration Science Payload for a proposed future Mars lander: MEDaL-1. Full announcement
Posted inMars
Martian Dust Storms May Ggenerate Atmospheric Electrical Conditions That Could Impact Mars Missions
[UAH] A new study by a doctoral researcher at The University of Alabama in Huntsville (UAH), a part of The University of Alabama System, suggests global dust storms on Mars […]
Posted inEuropa, Meteorites & Asteroids, Origin & Evolution of Life, Panspermia, Planetary Protection & Biosafety, Status Report, Water/Hycean Worlds & Oceanography
Earth As A Potential Source Of Llife For Europa’s Subsurface Ocean
The paper discusses the possibility of dust particles containing living bacteria ejected from Earth reaching Europa and landing on its surface.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
Dust Colour, Phase Behaviour, And Monte Carlo Modelling Of Interstellar Comet 3I/ATLAS From 4 au Pre- to 4 au Post-Perihelion
We report multi-band photometric imaging observations and Monte Carlo dust tail modelling of the interstellar comet 3I/ATLAS covering a wide range of heliocentric distances, from about 4 au pre-perihelion to […]
Posted inAtmospheres, Climate, Weather, Desert Worlds, Magnetic Fields, Electromagnetism, bioelectricity,, Mars, Status Report
Global Evolution Of Electric Fields During Planet Encircling Dust Storms On Mars
Planet-encircling dust storms fundamentally reshape Martian weather and the near-surface electrostatic environment.
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Status Report, Venus
Cosmic Dust Identified As The Source Of Venus’ Enigmatic Lower Haze
Venus, often called Earth’s twin, is in fact a planet of extremes. Beneath its thick carbon dioxide atmosphere lie crushing surface temperatures and dense clouds of sulfuric acid. While the […]
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
Interstellar Object 3I/ATLAS Observed from Mars by China’s Tianwen-1 Spacecraft
China’s Tianwen-1 Mars orbiter successfully imaged the third interstellar object, 3I/ATLAS, during its close encounter with Mars using the onboard HiRIC CMOS camera. This is China’s first deep-space observation of […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Mars, Status Report
Martian Concretion Sizes Predicted From Two Independently Constrained Inputs: Atmospheric Dust Grain Size And Obliquity-forced Wetting Duration
Diagenetic concretions have been identified at multiple widely separated sites on Mars, including Meridiani Planum (Opportunity), Gale crater (Curiosity), and Jezero crater (Perseverance).
Posted inAstrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography
A Direct View of the Chemical Properties of Water from Another Planetary System: Water D/H in 3I/ATLAS
All detected water reservoirs in the solar system exhibit a deuterium enrichment that links back to the physical environment at the time of stellar birth.